Getting an error message when starting the PSR 2100

We live in the 21st century, just google it.

What is the error message?

No power is reaching the unit or PS is defective.

I believe you must have a USB audio mic. If you do, plug it into the USB port in the back of the unit;

Hi, i think you can. You can go to any of the Yamaha companies around you area and explain to them the problem of the keyboard. They will give you good and quality replacement part for your Keyboard.

Make sure you go to only Yamaha company to avoid getting a wrong part for your Keyboard.Avoid road siderepairsforissue like this,it's more complicated to handle

I guess that will do.

Thanks for using fixya...

how to play with thumb

I believe that is the wrong VOLTAGE !!!

The PSR takes a 12 volt, 1 amp or more DC power supply with positive on the pin.

If you have connected 24 volts either AC or DC of either polarity you have likely caused internal damage. Try a 12 volt DC supply and if it doesn't work, it needs to go to a repair facility.

ALWAYS check the voltage and the polarity on ANY of the devices using the power adapters BEFORE connecting the adapter..

http://www.yamaha.com/yamahavgn/Documents/KeyboardsDMI/PSR2100E1.pdf
On page 155 it looks like the only input for device(s) in a 1/4" mono jack for microphone or guitar, not stereo that would be needed for iPod. However, if you could set the iPod to mono output, this 1/4" input would work for you.

I don't have a parts source for these other than Yamaha. Call them up to get the part number for the board. The sound is usually sent through the headphone jack which acts as a switch when you use headphones. Replacing that board should resolve your problem. If the board is no longer available, it is possible to repair the existing one, but this is a specialty task and not one I would recommend a novice attempt.

Please keep us posted on your progress,
Dan

An answer, but likely not a solution. I believe all Yamaha PSR series keyboards use the same 12 VDC adaptor, so I looked at the electrical schematic for another model I have. There seems to be no fuse on the power input. There are two components shown on the positive and negative wires off the power socket, but the symbols do not look like anything I have seen for fuses - they may be resistors. Power goes directly to a 5 VDC voltage regulator, which powers all of the solid state componenents. Too much voltage of the wrong type could have easily ruined many of the sensitive components.

Your only hope is to check the power socket area for the possibility of having fuses. My drawing shows the power socket, voltage regulator, and audio power amplifier being on one circuit board. That may not actually be the way it is in your model.

Good luck!
(your English is fine)